1 Explain that a population pyramid shows the age and sex structure of a population. 2  Point to the horizontal bars, which show the percentage (or the absolute number) of males and females in each age group. 3  Have students interpret the chart.
1 Although they range from $150-$400 or more, a large capacity (25-70 pints) dehumidifier for a basement (the dampest portion of most homes) or other large area averages $200-$300.
If your dehumidifier automatically cycles on and off, estimate the amount of time the dehumidifier is actually operating and using energy. For example, a dehumidifier that uses 620 watts and operates for approximately 10 hours each day at $.13 per kilowatt-hour costs $.81 per day to operate.If watts are not provided, this number can be replaced by multiplying the dehumidifier's amperage and voltage ratings.here are a wide range of dehumidifiers available, with models that vary according to capacity, consumer need, dehumidifier placement, cost, and more. Thus, choosing a dehumidifier can be a tricky process. One way to start is by figuring out how much moisture you need to remove and within how much space.